Those look awesome, thanks for the tip.

My all time fav are 503, but they have not been in production since the 2000’s. I held on to my limited collection of them until they were all in a state of disrepair. I’m still hoping for a revival of the model.

Same. 527 is my current choice. I’m wearing a pair right now.

In an ideal situation, yes. Not all devices even do this and when they do, there is the whole concept of hacking.